﻿<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>Space 404</title>

  <link href="https://fonts.googleapis.com/css?family=Righteous&display=swap" rel="stylesheet">

  <style>
    html,
    body {
      height: 100%;
      width: 100%;
      margin: 0px;
      background: linear-gradient(90deg, #2f3640 23%, #181b20 100%);
      overflow: hidden;
    }

    .moon {
      background: linear-gradient(90deg, #d0d0d0 48%, #919191 100%);
      position: absolute;
      top: -100px;
      left: -300px;
      width: 900px;
      height: 900px;
      content: '';
      border-radius: 100%;
      box-shadow: 0px 0px 30px -4px rgba(0, 0, 0, 0.5);
    }

    .moon__crater {
      position: absolute;
      content: '';
      border-radius: 100%;
      background: linear-gradient(90deg, #7a7a7a 38%, #c3c3c3 100%);
      opacity: 0.6;
    }

    .moon__crater1 {
      top: 250px;
      left: 500px;
      width: 60px;
      height: 180px;
    }

    .moon__crater2 {
      top: 650px;
      left: 340px;
      width: 40px;
      height: 80px;
      transform: rotate(55deg);
    }

    .moon__crater3 {
      top: -20px;
      left: 40px;
      width: 65px;
      height: 120px;
      transform: rotate(250deg);
    }

    .star {
      background: grey;
      position: absolute;
      width: 5px;
      height: 5px;
      content: '';
      border-radius: 100%;
      transform: rotate(250deg);
      opacity: 0.4;
      animation-name: shimmer;
      animation-duration: 1.5s;
      animation-iteration-count: infinite;
      animation-direction: alternate;
    }

    @keyframes shimmer {
      from {
        opacity: 0;
      }

      to {
        opacity: 0.7;
      }
    }

    .star1 {
      top: 40%;
      left: 50%;
      animation-delay: 1s;
    }

    .star2 {
      top: 60%;
      left: 90%;
      animation-delay: 3s;
    }

    .star3 {
      top: 10%;
      left: 70%;
      animation-delay: 2s;
    }

    .star4 {
      top: 90%;
      left: 40%;
    }

    .star5 {
      top: 20%;
      left: 30%;
      animation-delay: 0.5s;
    }

    .error {
      position: absolute;
      left: 100px;
      top: 400px;
      transform: translateY(-60%);
      font-family: 'Righteous', cursive;
      color: #363e49;
    }

    .error__title {
      font-size: 10em;
    }

    .error__subtitle {
      font-size: 2em;
    }

    .error__description {
      opacity: 0.5;
    }

    .error__button {
      min-width: 7em;
      margin-top: 3em;
      margin-right: 0.5em;
      padding: 0.5em 2em;
      outline: none;
      border: 2px solid #2f3640;
      background-color: transparent;
      border-radius: 8em;
      color: #576375;
      cursor: pointer;
      transition-duration: 0.2s;
      font-size: 0.75em;
      font-family: 'Righteous', cursive;
    }

    .error__button:hover {
      color: #21252c;
    }

    .error__button--active {
      background-color: #e67e22;
      border: 2px solid #e67e22;
      color: white;
    }

    .error__button--active:hover {
      box-shadow: 0px 0px 8px 0px rgba(0, 0, 0, 0.5);
      color: white;
    }

    .astronaut {
      position: absolute;
      width: 185px;
      height: 300px;
      left: 70%;
      top: 50%;
      transform: translate(-50%, -50%) rotate(20deg) scale(1.2);
    }

    .astronaut__head {
      background-color: white;
      position: absolute;
      top: 60px;
      left: 60px;
      width: 60px;
      height: 60px;
      content: '';
      border-radius: 2em;
    }

    .astronaut__head-visor-flare1 {
      background-color: #7f8fa6;
      position: absolute;
      top: 28px;
      left: 40px;
      width: 10px;
      height: 10px;
      content: '';
      border-radius: 2em;
      opacity: 0.5;
    }

    .astronaut__head-visor-flare2 {
      background-color: #718093;
      position: absolute;
      top: 40px;
      left: 38px;
      width: 5px;
      height: 5px;
      content: '';
      border-radius: 2em;
      opacity: 0.3;
    }

    .astronaut__backpack {
      background-color: #bfbfbf;
      position: absolute;
      top: 90px;
      left: 47px;
      width: 86px;
      height: 90px;
      content: '';
      border-radius: 8px;
    }

    .astronaut__body {
      background-color: #e6e6e6;
      position: absolute;
      top: 115px;
      left: 55px;
      width: 70px;
      height: 80px;
      content: '';
      border-radius: 8px;
    }

    .astronaut__body__chest {
      background-color: #d9d9d9;
      position: absolute;
      top: 140px;
      left: 68px;
      width: 45px;
      height: 25px;
      content: '';
      border-radius: 6px;
    }

    .astronaut__arm-left1 {
      background-color: #e6e6e6;
      position: absolute;
      top: 127px;
      left: 9px;
      width: 65px;
      height: 20px;
      content: '';
      border-radius: 8px;
      transform: rotate(-30deg);
    }

    .astronaut__arm-left2 {
      background-color: #e6e6e6;
      position: absolute;
      top: 102px;
      left: 7px;
      width: 20px;
      height: 45px;
      content: '';
      border-radius: 8px;
      transform: rotate(-12deg);
      border-top-left-radius: 8em;
      border-top-right-radius: 8em;
    }

    .astronaut__arm-right1 {
      background-color: #e6e6e6;
      position: absolute;
      top: 113px;
      left: 100px;
      width: 65px;
      height: 20px;
      content: '';
      border-radius: 8px;
      transform: rotate(-10deg);
    }

    .astronaut__arm-right2 {
      background-color: #e6e6e6;
      position: absolute;
      top: 78px;
      left: 141px;
      width: 20px;
      height: 45px;
      content: '';
      border-radius: 8px;
      transform: rotate(-10deg);
      border-top-left-radius: 8em;
      border-top-right-radius: 8em;
    }

    .astronaut__arm-thumb-left {
      background-color: #e6e6e6;
      position: absolute;
      top: 110px;
      left: 21px;
      width: 10px;
      height: 6px;
      content: '';
      border-radius: 8em;
      transform: rotate(-35deg);
    }

    .astronaut__arm-thumb-right {
      background-color: #e6e6e6;
      position: absolute;
      top: 90px;
      left: 133px;
      width: 10px;
      height: 6px;
      content: '';
      border-radius: 8em;
      transform: rotate(20deg);
    }

    .astronaut__wrist-left {
      background-color: #e67e22;
      position: absolute;
      top: 122px;
      left: 6.5px;
      width: 21px;
      height: 4px;
      content: '';
      border-radius: 8em;
      transform: rotate(-15deg);
    }

    .astronaut__wrist-right {
      background-color: #e67e22;
      position: absolute;
      top: 98px;
      left: 141px;
      width: 21px;
      height: 4px;
      content: '';
      border-radius: 8em;
      transform: rotate(-10deg);
    }

    .astronaut__leg-left {
      background-color: #e6e6e6;
      position: absolute;
      top: 188px;
      left: 50px;
      width: 23px;
      height: 75px;
      content: '';
      transform: rotate(10deg);
    }

    .astronaut__leg-right {
      background-color: #e6e6e6;
      position: absolute;
      top: 188px;
      left: 108px;
      width: 23px;
      height: 75px;
      content: '';
      transform: rotate(-10deg);
    }

    .astronaut__foot-left {
      background-color: white;
      position: absolute;
      top: 240px;
      left: 43px;
      width: 28px;
      height: 20px;
      content: '';
      transform: rotate(10deg);
      border-radius: 3px;
      border-top-left-radius: 8em;
      border-top-right-radius: 8em;
      border-bottom: 4px solid #e67e22;
    }

    .astronaut__foot-right {
      background-color: white;
      position: absolute;
      top: 240px;
      left: 111px;
      width: 28px;
      height: 20px;
      content: '';
      transform: rotate(-10deg);
      border-radius: 3px;
      border-top-left-radius: 8em;
      border-top-right-radius: 8em;
      border-bottom: 4px solid #e67e22;
    }
  </style>

</head>

<body>

  <div class="moon"></div>
  <div class="moon__crater moon__crater1"></div>
  <div class="moon__crater moon__crater2"></div>
  <div class="moon__crater moon__crater3"></div>

  <div class="star star1"></div>
  <div class="star star2"></div>
  <div class="star star3"></div>
  <div class="star star4"></div>
  <div class="star star5"></div>

  <div class="error">
    <div class="error__title">404</div>
    <div class="error__subtitle">Hmmm...</div>
    <div class="error__description">这个网页还未开发好请稍等....</div>
    <!-- <button class="error__button error__button--active">返回首页</button>
  <button class="error__button">联系我们</button> -->
  </div>

  <div class="astronaut">
    <div class="astronaut__backpack"></div>
    <div class="astronaut__body"></div>
    <div class="astronaut__body__chest"></div>
    <div class="astronaut__arm-left1"></div>
    <div class="astronaut__arm-left2"></div>
    <div class="astronaut__arm-right1"></div>
    <div class="astronaut__arm-right2"></div>
    <div class="astronaut__arm-thumb-left"></div>
    <div class="astronaut__arm-thumb-right"></div>
    <div class="astronaut__leg-left"></div>
    <div class="astronaut__leg-right"></div>
    <div class="astronaut__foot-left"></div>
    <div class="astronaut__foot-right"></div>
    <div class="astronaut__wrist-left"></div>
    <div class="astronaut__wrist-right"></div>

    <div class="astronaut__cord">
      <canvas id="cord" height="500px" width="500px"></canvas>
    </div>

    <div class="astronaut__head">
      <canvas id="visor" width="60px" height="60px"></canvas>
      <div class="astronaut__head-visor-flare1"></div>
      <div class="astronaut__head-visor-flare2"></div>
    </div>
  </div>

  <script>
    function drawVisor() {
      const canvas = document.getElementById('visor');
      const ctx = canvas.getContext('2d');

      ctx.beginPath();
      ctx.moveTo(5, 45);
      ctx.bezierCurveTo(15, 64, 45, 64, 55, 45);

      ctx.lineTo(55, 20);
      ctx.bezierCurveTo(55, 15, 50, 10, 45, 10);

      ctx.lineTo(15, 10);

      ctx.bezierCurveTo(15, 10, 5, 10, 5, 20);
      ctx.lineTo(5, 45);

      ctx.fillStyle = '#2f3640';
      ctx.strokeStyle = '#f5f6fa';
      ctx.fill();
      ctx.stroke();
    }

    const cordCanvas = document.getElementById('cord');
    const ctx = cordCanvas.getContext('2d');

    let y1 = 160;
    let y2 = 100;
    let y3 = 100;

    let y1Forward = true;
    let y2Forward = false;
    let y3Forward = true;

    function animate() {
      requestAnimationFrame(animate);
      ctx.clearRect(0, 0, innerWidth, innerHeight);

      ctx.beginPath();
      ctx.moveTo(130, 170);
      ctx.bezierCurveTo(250, y1, 345, y2, 400, y3);

      ctx.strokeStyle = 'white';
      ctx.lineWidth = 8;
      ctx.stroke();


      if (y1 === 100) {
        y1Forward = true;
      }

      if (y1 === 300) {
        y1Forward = false;
      }

      if (y2 === 100) {
        y2Forward = true;
      }

      if (y2 === 310) {
        y2Forward = false;
      }

      if (y3 === 100) {
        y3Forward = true;
      }

      if (y3 === 317) {
        y3Forward = false;
      }

      y1Forward ? y1 += 1 : y1 -= 1;
      y2Forward ? y2 += 1 : y2 -= 1;
      y3Forward ? y3 += 1 : y3 -= 1;
    }

    drawVisor();
    animate();
  </script>

</body>

</html>